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---
id: 615389bd81347947ea7ba896
title: Step 11
challengeType: 0
dashedName: step-11
---
# --description--
Flexbox is a one-dimensional CSS layout approach that focuses on the flow of content. It offers the ability to control the way items are spaced and aligned within a container.
To set an element to use Flexbox, you give it a `display` property set to `flex` . Create a `#gallery` selector and give it that property.
# --hints--
You should have a `#gallery` selector.
```js
assert(new __helpers.CSSHelp(document).getStyle('#gallery '));
```
Your `#gallery` selector should have a `display` property set to `flex` .
```js
assert(new __helpers.CSSHelp(document).getStyle('#gallery ')?.display === 'flex');
```
# --seed--
## --seed-contents--
```html
<!DOCTYPE html>
< html >
< head >
< meta charset = "utf-8" >
< meta name = "viewport" content = "width=device-width, initial-scale=1.0" >
2022-03-14 15:54:43 +00:00
< title > Photo Gallery< / title >
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< link rel = "stylesheet" href = "./styles.css" >
< / head >
< body >
< div class = "header" >
< h1 > CSS FLEXBOX PHOTO GALLERY< / h1 >
< / div >
< div id = "gallery" >
< img src = "https://cdn.freecodecamp.org/curriculum/css-photo-gallery/1.jpg" / >
< img src = "https://cdn.freecodecamp.org/curriculum/css-photo-gallery/2.jpg" / >
< img src = "https://cdn.freecodecamp.org/curriculum/css-photo-gallery/3.jpg" / >
< img src = "https://cdn.freecodecamp.org/curriculum/css-photo-gallery/4.jpg" / >
< img src = "https://cdn.freecodecamp.org/curriculum/css-photo-gallery/5.jpg" / >
< img src = "https://cdn.freecodecamp.org/curriculum/css-photo-gallery/6.jpg" / >
< img src = "https://cdn.freecodecamp.org/curriculum/css-photo-gallery/7.jpg" / >
< img src = "https://cdn.freecodecamp.org/curriculum/css-photo-gallery/8.jpg" / >
< img src = "https://cdn.freecodecamp.org/curriculum/css-photo-gallery/9.jpg" / >
< img src = "https://cdn.freecodecamp.org/curriculum/css-photo-gallery/10.jpg" / >
< / div >
< / body >
< / html >
```
```css
* {
box-sizing: border-box;
}
body {
margin: 0;
font-family: Arial;
background: #EBE7E7 ;
}
.header {
text-align: center;
padding: 32px;
background: #E0DDDD ;
}
--fcc-editable-region--
--fcc-editable-region--
#gallery img {
width: 25%;
height: 300px;
}
```
